Gustaye s



Q (No Model.)

G. S. NEU.

ELEGTRIO ALLY OPERATIVE LOCK.

Patented Oct. 9, 1888 u A////////////////////////////////////////////////////// 4/ 2///////////// m I M D, n u W O O No. 390,795. 7K

WITNESSES:

UNITE STATES PATENT @rrrcn.

GUSTAVE S. NEU, OF NENV YORK, N. Y.

ELECTRlCALLY-OPERATIVE. LOCK.

SPECIFICATION forming part of Letters Patent No. 390,795, dated October 9, 1888.

(No model.)

To all whom it may concern.-

Beit known that I, GUSTAVE S. NEU, of the city, county, and State of New York, haveinvented a new and useful Improvement in Electrically Operative Locks, of which the following is a specification.

This invention relates more particularly to looks of the kind frequently used on the outside doors of apartment-houses and in kindred situations, to permit the unlocking of the door from a distant point within the house, in which the release of the bolt is effected by means of an electric current acting through an eleetro-' ated by means of an electro-magnet and an in-' termittent circuit-breaker, so that the release of the catch will be assured by the repetition of the blows of the hammer.

In order that my invention may be fully un derstood, I will first give a detailed description of the at present preferred mode of carrying the same into effect, and then point out the essential features of the invention in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which- Figure 1 is a longitudinal sectional elevation of the stationary partof an electricallyoperative lock embodying my improvement applied to a door-jamb. Fig. 2 is a sectional plan view of the same on the line a" 00, Fig. 1, showing also, in dotted lines, the movable part of the said lock on the door. Fig. 3 is a crosssectional elevation of the same, taken on the line y 3/, Fig. 1. Fig. 4: is a face view of the movable part of the lock on the door.

Like letters of reference denote corresponding parts in the different figures of the drawin s.

Th6 lock is formed of two parts, A and B,

jamb part A of the lock, and thus secure the door.

The bolt E may be arranged to be released, and the opening of the door D from the outside thus permitted, by providing the bolt-socket F with a yielding front wall, G, having a spring, H, to hold it normally in forward or bolt-restraining position, and an anti-friction roller, I, in its outer edge, to facilitate the retraction of the beveled bolt 1*] when the door is closed, and to cause the said front wall, G, to yield readily to permit the bolt E to pass and the door E to open when pressure is applied to the outside of the door.

A catch, K, is arranged to restrain the bolt E, and thus lock the door, in this instance by pivoting it to the jamb part A of the lock, and providing it with an actuating-spring, L, in such a manner that it will automatically engage and lock the movable wall G of the boltsocket F when in its forward position, an adjustable limit-point, M, being by preference provided to regulate the degree of engagement of the catch K, as shown.

To trip the catch K, release the socket-wall G, and thus the bolt E, a vibratory hammer, N, is arranged on the part A, so as to, when operated, strike the catch K, and an electromagnet, O, vibratory armature I, and intermittent circuit-closer, Q, to, when the electro magnet is energized by means of the electric current, rapidly vibrate the hammer N, thus with certainty insuring the tripping of the catch, if not at the first blow, by the rapid succession of blows, however great may be the pressure on the bolt E, and thus on the catch K. A tension device is also by preference provided to keep the bolt E, and hence the catch K, under constant strain, and thus prevent the return of the catch K after the movement thereof caused by each blow of the hammer N, and may be formed, as shown, of a spring, R, arranged on the jamb part A of the lock, and a bearer, S, on the door part B, to put the spring under tension when the door is closed, the reaction of the spring R naturally tending to press the bolt E against the socketwall G. This tension device will also cause the door to open a short distance automatically when released by the action of the electric current transmitted through the circuit in which the electro-niagnetic tripping device is included.

I claim as new and desire to secure by Letters Patent--- 1. In a lock, the combination of a belt, a restraining-catch, and an electrically-operative vibratory tripping-hammer, substantially as described.

2. The combination of a bolt, a restrainingcatclna bolt-tension device,and an electrically- GUSTAVE S. NEU.

X'Vitnessesz \VM. F. S'roNn, JOHN H. Donal-mart. 

